Sheathing - rust resistant
steel, brass or stainless steel are used with clamps & screws to affix
the
heater rigidly on cylinder. It is also available in two halves with asbestos
heat insulater cover.
Heating elements - Nichrome ribbin wire wound mica strip are made suitable
to the sizes insulated with mica
blocks. The element is wound uniformly to eliminate hot spot. For temperature
upto 600°C, the heater is also available with helix coiled element
insulated with grooved refractories.
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